Debugging in python

Pdb o gdb do python
http://docs.python.org/library/pdb.html

coloque o seguinte código na linha que quer colocar o breakpoint
import pdb; pdb.set_trace()

salve

rode o script python assim
python -m pdb myscript.py

(Pdb)>>> b :



Fazendo testes em python

http://docs.python.org/library/unittest.html

exemplo

import random
import unittest

class TestSequenceFunctions(unittest.TestCase):

def setUp(self):
self.seq = range(10)

def test_shuffle(self):
# make sure the shuffled sequence does not lose any elements
random.shuffle(self.seq)
self.seq.sort()
self.assertEqual(self.seq, range(10))

def test_choice(self):
element = random.choice(self.seq)
self.assertTrue(element in self.seq)

def test_sample(self):
self.assertRaises(ValueError, random.sample, self.seq, 20)
for element in random.sample(self.seq, 5):
self.assertTrue(element in self.seq)

if __name__ == '__main__':
unittest.main()